how old is the 110? How big is your system? Whats your bioload? How big is the sump your putting one of these skimmers in? The swb has a much bigger footprint than the sca. Theres more info we need before we can give you straight answer. If it were me id buy neither because my system is too big for either, but if i did have a system that could use these i would go with the reef octo because i have the nwb-150 and i love the damn thing. But i have no experience with the sca skimmers so im going completely off of my small amount of experience with 8 different skimmers.